diff --git a/.docker/Dockerfile b/.docker/Dockerfile
index d0432284983fd937ff731e0c67be3ac35b551170..17f34da1835b63726bd3fa7770722d0456eba179 100644
--- a/.docker/Dockerfile
+++ b/.docker/Dockerfile
@@ -1,5 +1,4 @@
 ARG CPPLIB_REGISTRY_IMAGE
-ARG CPPLIB_VERSION=bla
 FROM $CPPLIB_REGISTRY_IMAGE
 
 COPY .docker/wait-for-it.sh /wait-for-it.sh
@@ -8,7 +7,7 @@ COPY .docker/wait-for-it.sh /wait-for-it.sh
 WORKDIR /libcaosdb/
 RUN mkdir build
 WORKDIR /libcaosdb/build
-RUN cmake ..
+RUN cmake -D INSTALL_DIR_NAME=libcaosdb..
 RUN cmake --build .
 RUN cmake --install . --prefix /usr/local/
 
@@ -22,10 +21,10 @@ RUN apt-get install -y openjdk-11-jdk-headless
 # build and run tests
 CMD ls -la && \
     ls -la /usr/local/lib/ && \
-    ls -la /usr/local/lib/libcaosdb-$ENV_CPPLIB_VERSION && \
+    ls -la /usr/local/lib/libcaosdb && \
     mkdir build && \
     cd build && \
     /wait-for-it.sh caosdb-server:10443 -t 500 -- \
-    cmake -D CMAKE_PREFIX_PATH=/usr/local/lib/libcaosdb-$ENV_CPPLIB_VERSION .. && \
+    cmake -D CMAKE_PREFIX_PATH=/usr/local/lib/libcaosdb .. && \
     cmake --build . && \
     ctest
diff --git a/.docker/run.sh b/.docker/run.sh
index 3853befaae8bc63a8a563042f31252088824766e..b0e1a716f28516b83043fb3fdb6594515a0bafd4 100755
--- a/.docker/run.sh
+++ b/.docker/run.sh
@@ -1,6 +1,5 @@
 #!/bin/sh
 
-echo $CPPLIB_VERSION
-CPPLIB_VERSION=$CPPLIB_VERSION docker-compose -f tester.yml run tester
+docker-compose -f tester.yml run tester
 rv=$?
 echo $rv > result
diff --git a/.docker/tester.yml b/.docker/tester.yml
index da03270f761ae492c974261fb46b43ecf115edf4..1673eed239866d774a570c752c984e7fc35cc0df 100644
--- a/.docker/tester.yml
+++ b/.docker/tester.yml
@@ -4,8 +4,6 @@ services:
     image: "$CPPINTTEST_REGISTRY_IMAGE"
     networks:
       - docker_caosnet
-    environment:
-      ENV_CPPLIB_VERSION: "$CPPLIB_VERSION"
     volumes:
       - type: bind
         source: ./cert
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 5c0297e3ca6f177c2f3a22965f317c88f25e5c4d..49356e2b2c76d5790c59843fcc730ba158acf750 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -33,16 +33,11 @@ variables:
   # this is the name of the image in the /image-cache/ directory
   CPPINTTEST_IMAGE_CACHE: caosdb-cppinttest-testenv:$CI_COMMIT_REF_NAME.tar
 
-
-
   ## FOR DEBUGGING
   TRIGGERED_BY_REPO: CPPINTTEST
   TRIGGERED_BY_REF: $CI_COMMIT_REF_NAME
   TRIGGERED_BY_HASH: $CI_COMMIT_SHORT_SHA
 
-  ## Run tests against this cpplib version
-  CPPLIB_VERSION: 0.0.1
-
 
   # This is the caosdb-deploy branch which build the images for caosdb-server and caosdb-mysql
   # TODO change to dev after merge of f-grpc to dev
@@ -65,6 +60,7 @@ info:
     - echo "$CI_REGISTRY_IMAGE_BASE"
     - echo "$CPPINTTEST_REGISTRY_IMAGE"
     - echo "$CPPINTTEST_IMAGE_CACHE"
+    - echo "$CAOSDB_TAG"
 
 
 # Build a docker image in which tests for this repository can run
@@ -95,7 +91,6 @@ build-testenv:
     - docker pull $CPPLIB_REGISTRY_IMAGE || true # remove??? docker build --pull???
     - docker build
       --build-arg CPPLIB_REGISTRY_IMAGE=$CPPLIB_REGISTRY_IMAGE
-      --build-arg CPPLIB_VERSION=$CPPLIB_VERSION
       --file .docker/Dockerfile
       --pull
       --cache-from $CPPINTTEST_REGISTRY_IMAGE
@@ -115,7 +110,7 @@ build-test:
     - echo $PWD
     - mkdir build
     - cd build
-    - cmake -D CMAKE_PREFIX_PATH=/usr/local/lib/libcaosdb-${CPPLIB_VERSION} ..
+    - cmake -D CMAKE_PREFIX_PATH=/usr/local/lib/libcaosdb ..
     - cmake --build .
 
 
@@ -164,7 +159,7 @@ test:
 
       # the pyinttest docker writes the return value of the tests into the
       # file result
-    - CPPLIB_VERSION=$CPPLIB_VERSION /bin/sh ./run.sh
+    - /bin/sh ./run.sh
 
       # collect log files
     - docker logs docker_caosdb-server_1 &> ../caosdb_log.txt